Jan Høydahl created SOLR-4785:
---------------------------------
Summary: New MaxScoreQParserPlugin
Key: SOLR-4785
URL: https://issues.apache.org/jira/browse/SOLR-4785
Project: Solr
Issue Type: New Feature
Components: query parsers
Reporter: Jan Høydahl
Assignee: Jan Høydahl
Priority: Minor
Fix For: 5.0, 4.4
A customer wants to contribute back this component.
It is a QParser which behaves exactly like "lucene" parser (extends it), but
returns the Max score from the clauses, i.e. max(c1,c2,c3..) instead of the
default which is sum(c1,c2,c3...). It does this by wrapping all SHOULD clauses
in a DisjunctionMaxQuery with tie=1.0. Any MUST or PROHIBITED clauses are
passed through as-is. Non-boolean queries, e.g. NumericRange falls-through to
"lucene" parser.
To use, add to solrconfig.xml:
{code:xml}
<queryParser name="maxscore" class="solr.MaxScoreQParserPlugin"/>
{code}
Then use it in a query
{noformat}
q=A AND B AND {!maxscore v=$max}&max=C OR (D AND E)
{noformat}
This will return the score of A+B+max(C,sum(D+E))
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
